Punnet Square Practice Question Preview (ID: 49023)


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If two heterozygous individuals are mated, what percentage of their offspring will have the dominant phenotype?
a) 100%
b) 10%
c) 50%
d) 75%

Fluffy fur is a dominant trait in guinea pigs. Two fluffy guinea pigs have a non-fluffy offspring. What must be the genotypes of the parents?
a) FF and FF
b) Ff and Ff
c) ff and ff
d) Fg and FF

A heterozygous individual is mated with a homozygous recessive individual. What percentage of their children will be heterozygous?
a) 10%
b) 100%
c) 25%
d) 50%

The probability of a human couple having a male child is:
a) 100%
b) 50%
c) 25%
d) 75%

A normal woman with a colorblind father marries a normal man. What is the probability that her child (who will be a male), will be colorblind?
a) 50%
b) 75%
c) 100%
d) 0%

Hemophilia is a sex-linked trait. What is the probability of a diseased female and a normal male producing a healthy child?
a) 25%
b) 100%
c) 50%
d) 0%

Having more than 5 fingers (Polydactyly) is a dominant trait. What is the probability that two people, each of which have 5 fingers per limb,will have a 6-fingered child?
a) 50%
b) 0%
c) 75%
d) 100%

Cuteness is a dominant trait in bunnies. Two bunnies heterozygous for cuteness have numerous offspring. What percentage of the offspring would be predicted to not be cute?
a) 100%
b) 25%
c) 50%
d) 75%

The genotype of a carrier of a sex-linked disease would be:
a) X*X
b) XY
c) X^X*
d) xx

Purple flowers are dominant over white. What % will be white if two homozygous dominant parents are bred?
a) 100%
b) 50%
c) 0%
d) 25%

Round is dominant to square. What is the probability of the shape being round if a homozygous round father and a homozygous square mother have babies?
a) 100%
b) 75%
c) 25%
d) 0%

What would be the genotype of a person who has a sex-linked disease would be
a) X*X
b) XY
c) XX
d) X*Y

Whiskers in seals is dominant. What is the probability that 2 homozygous whiskered seals would have a baby without whiskers?
a) 0%
b) 100%
c) 25%
d) 10%

If brown is dominant over pink, what is the phenotypes of the offspring of 2 heterozygous brown bunnies?
a) 25% brown 75% pink
b) 100% brown
c) 75% brown, 25% pink
d) 100% pink

If brown is dominant to pink, what is the phenotype of the offspring of 1 homozygous brown bunny and 1 pink bunny?
a) 100% brown bunnies
b) 75% brown 25% pink
c) 0% brown
d) 50% of each

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